Automatic transmission and control method of the same
AssigneeJATCO Ltd
InventorNaohiro YAMADA
Life of this patent
Estimating the term…
Abstract
An automatic transmission includes a park rod adapted to non-rotatably lock an output shaft of the automatic transmission, an actuator adapted to drive the park rod, and an ATCU adapted to drive the actuator when a setting range of the automatic transmission is set into a P range. In a situation where an accelerator pedal is pressed on a climbing slope, driving force and gradient resistance are balanced, and a vehicle is stopped, the ATCU does not set the setting range of the automatic transmission into the P range even when a shifter is operated into the P range.
Claims7
1-9. (canceled)
An automatic transmission, comprising:
- a park lock mechanism adapted to non-rotatably lock an output shaft of the automatic transmission;
- an actuator adapted to drive the park lock mechanism;
- and
- a control unit adapted to drive the actuator when a setting range of the automatic transmission is set into a P range, wherein
- in a situation where an accelerator pedal is pressed on a climbing slope, driving force and gradient resistance are balanced, and a vehicle is stopped, the control unit does not set the setting range of the automatic transmission into the P range even when a shifter is operated into the P range.
An automatic transmission, comprising:
- a park lock mechanism adapted to non-rotatably lock an output shaft of the automatic transmission;
- an actuator adapted to actuate the park lock mechanism;
- and
- a control unit adapted to drive the actuator when a setting range of the automatic transmission is set into a P range, wherein
- in a situation where an accelerator pedal is pressed on a climbing slope, driving force and gradient resistance are balanced, and a vehicle is stopped, and when a shifter is operated into the P range and the setting range of the automatic transmission is set into the P range, the control unit drives the actuator, instructs an engine to maintain throttle opening, and maintains a power transmission clutch of the automatic transmission in an engaged state.
A control method of an automatic transmission including a park lock mechanism adapted to non-rotatably lock an output shaft of the automatic transmission, and an actuator adapted to drive the park lock mechanism, the control method comprising:
- in a situation where an accelerator pedal is pressed on a climbing slope, driving force and gradient resistance are balanced, and a vehicle is stopped, not setting a setting range of the automatic transmission into a P range even when a shifter is operated into the P range.
A control method of an automatic transmission including a park lock mechanism adapted to non-rotatably lock an output shaft of the automatic transmission, and an actuator adapted to actuate the park lock mechanism, the control method comprising:
- in a situation where an accelerator pedal is pressed on a climbing slope, driving force and gradient resistance are balanced, and a vehicle is stopped, and when a shifter is operated into a P range and a setting range of the automatic transmission is set into the P range, driving the actuator, instructing an engine to maintain throttle opening, and maintaining a power transmission clutch of the automatic transmission in an engaged state.
Dependencies are inferred from the claim text.